ChicagoBoss – The requested template (“src/view/blaindex.{dtl,html,txt,js,jade,eex}”) was not found. Additionally, no handler was found for processing 404 errors. You probably want to modify bla.routes to prevent errors like this one.

I wasted a lot of time with the above exception. Editing the routes file to no avail.

The problem here is most likely with the controller.

The problem in my case was that IntelliJ added below by default
%% API
-export([]).